Sound-modifier for talking-machines.



E. P. SHEPARD.

SOUND MODIFIER FOR TALKING MACHINES.

APPLICATION FILED DE02-3o, 1908.

925,958. Patented June 22,1909.

EDWARD P. SHEPARD, OF-SA DIEGO, ALIFORNIA.

sonrea-MODIFIER Foa TiiLmNe-MACHNES.

Specification of Letters Patent.

Patented June 22, 1909.

Application led December 30, 1908. Seria1 No. 470,021.

To all whom it may concern:

Be it known that I, EDWARD P. SHEPARD, a citizen of the United States, residing at ban Diego, in the county of San Diego and f State of California, have invented new and useful Improvements in Sound -Modiers for 'lalking-lvlachines, of which the following is a specification.

lhis invention relates to a device designed for use in connection with gramophones and other talking machines whereby the sound can be effectively modified or reduced with` out, however, producing any detrimental iuuliiing effect.

The invention has for one of its objects to improve and simplify the construction of devices of this character so as to be coinparatively simple and inexpensive to' manufacture, reliable and eflicient in use, and so designed as to be in the nature of an attachment which can. be readily applied to mai chines in common use.

Another object of the invention is the provision of a sound-modifying device consisting of a resilient or elastic ring adapted to tit within the gooseneck of the machine or in the sleeve connecting the sounding box with the gooseneclgand secured to this ring and stretched across the same is a diaphragm of suitable material or fabric such as silk which allows the sound waves to readily pass with the effect that the sound will be reduced in an effective manner.

W ith these objects in view and others, as will appear the description proceeds, the invention comprises the various novel fea` tures of construction and arrangement of parts which will b e more fully described hereinafter and set forth with particularity iu the claims appended hereto.

ln the accompanying` drawing, which illustrates one embodiment of the invention, Figure l, is' a fragmentary view of the goose-neck of a talking machine showing the attachment arranged in the sounding box of the goose-neck, said sound box bemg shown in section. Fig. 2 is adetail sectional view showing the attachment located within the goose-neck at a point inwardly from the box. Fig. 3 is a transverse section on line l i l 3 3, Fig. l. Fig. 4: is a plan view of the attachment. Fig. 5 is a diametrical sectional view thereof.

Similar reference characters are employed to designate corresponding parts throughout the views.

Referring 'to the drawing, A designates the sound-modifying attachment which may be located within the part or sleeve B by which the sounding box is attached to the goose-neck C or within an equivalent part of the talking machine, the attachment being positioned between the annular shoulder l of the said part B and the extremity of the goose-neck. If desired, however, the sound-modifying attachment can be located within the goose-neck C as shown in Fig. 2, at a point above the bayonet joint 4L that detachably connects the said part B with the goose-neck.

The sound-modifying attachment preferably consists of a ring 5 of rubber or other suitable elastic material and of such diameter as to snugly fit in the goose-neck or part B. This ring constitutes a support or a body for a diaphragm 6 of any suitable fabric such, for instance, as silk which serves to reduce or modify the sound. This diaphragm of silk is gluedcemented or otherwise suitably secured to the supporting ring.

From the foregoing description, taken in connection with the accompanying drawing,

Vthe advantages of the construction and of the method of operation will be readily apparent to .those skilled in the art to which the invention appertains, and while l have described the principle of operation of the invention, together with the device which l now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are within the. scope of the claims appended hereto. A

Having thus described the invention, what l claim is zl. A sound-modifying attachment for talking machines consisting of an annular elastic body adapted to be frictionally held in place in the machine by its own resiliency,

and a diaphragm of fabric stretched across In testimony whereof I aiix my signature the opening of the body and secured ixedlyy in presence of two Witnesses. Q

to the latter.

2. A sound-modifying attachment for talkl v EDWARD P' SHEPARD' in' machines comprising a rubber ring, and Witnesses: a iaphragm of silk stretched across the ring JOHN N. NEWKIRK,

\and secured to the said ring. A. T. MACFARLAND. 

